Animal Housing is a multidisciplinary scientific area that requires the establishment and use of a standardized vocabulary that provides consistency and reduces misunderstandings among scientists with diverse background or Nationality. A first report-dictionary entitled ‘Glossary of Terms on Animal Housing: Basic Engineering, Physical and Physiological Definitions’ has been prepared within the framework of Working Group ‘Animal Housing in Hot Climate’ established under CIGR - Section II. The glossary makes reference to Engineering, Thermal Biology and Environmental Physiology disciplines and it aims at (1) setting-up uniformity in Animal Housing terms pertaining to climatization field of study and to (2) serve as a focal point for the development of valuable new terms and definitions, and become a functional tool for all those involved in the subject. Besides, the glossary can eventually become a background document for opening-up further discussions on the meaning of various terms used in Animal Housing.